Machine for pointing carbons.



. MA Tl" MACHINE F02' POIM'IWG QARSOMS.

APPLICATION FILED OCT4 un wl?.

di SHEETS--SHEET I.

A. M. BELL.

MACHINE FOR PQINTING CARBONS. APPLxcATlow FILED nc. xe, 1911.

A. M. BELL.

MACHINE FOR PDINTING CARBONS.

APPLICATION man oc.18,191'1.

LQJQ. l Patented Feb. 5, 1918.

4 SHEETS-SHEET 3.

3 noem/43o@ @wwf/We W/m A. IVI. BELL.

MACHINE FOR POINIING CARBONS.

APPLICATION FILED ocI.I8.I9I1.

1,255,693. Patented Feb. 5,1m.

4 SHEETS-SHEET 'I.

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g ARTHUR iu. BELL, or BELLEVILLE, ILLINOIS, AssIcNoa, BY iuEsNE ASSIGNMENTS,

' lO NATIGNAL CARBON COMPANYQINC., OF CLEVELAND, OHIO,` A CORPORATION 0H NEW YGBQK.

To all whom @It amy concern: Y

Be it known that I, ARTHUR M. BELL, a citizen of the United States, residing at Belleville, in the lcounty of St. Clair, State of Illinois, have invented certain new and l into the kmaterial forming the depolarizing mixture, and for convenience in performing this'operation, it is of assistance if the rods be pointed at one end.

In accordance with the present invention mechanism is provided by which the pointing operation is in a large measure automatic. More particularly, means is provided by whichirods may be fed` automatically one at a time'into chucks mounted on a movable head-by which they-are conveyed to a properly beveled grinding wheel whereby the rods are pointed. Further movement of the head then brings the finished rods into a position where each one is forced out of its holding .chuck by a new rod `that is being supplied to the chuck.

l"The machine is of simple construction, has few moving parts, the operation of pointing the rodsmay be quickly performed and the entire machine is automatic in its action. The particular nature of the invention and other objects and advantages thereof will appear mosti clearly from a detaileddescription of apreferred embodiment thereof as illustrated in the accompanying drawings in .which Figure 1 is an elevation of one side of the machine; Fig. 2 is a front elevation; Fig..3 is aview principally in section along the line 3 3 of Fig. 2; Fig. 4 is an elevation of the other side of the machine; Fig. 5 is a detailed view of one of the chucks-'for holding the rods and Fig. 6 is a sectional view on the line 6-6 ofrFig. 3.

Throughout the vseveral views similar reference characters denote similar parts. The

Specication of Letters Patent.

MACHINE `ron PoINrINe cannons.

Patented Feb. 5, 191% Application med october 1s, 191.7.` serial No. 197,299.

moving parts of the machine arer mounted upon a pedestal or support 10 provided with al flat base 11, which may be attached to the floor. The pedestal which may be of any desired construction is here shown as comprising two sections bolted together as at12. A bracket 13 is attached to the front face of the pedestal and this bracket is provided with split clamping members 1-/1 within whicha sleeve 15 may be retained in any desired position of adjustment by means of bolts 16. The sleeve is provided with adjustable collars 17 to prevent longitudinal movement. Attached to one end of the sleeve is an arm 18 which is provided with a lug 19 through which is threaded an adjusting screw 20, the inner end of which is rotatably connected to the upper section of the pedestal as at 21. Attached to the free end of arm 18 is a pin 22 which is formed at its outer end with an enlarged head 23 to serve as a support for certain parts ofthe apparatus as will. hereinafter appear.

`Rotatably mounted on the shank of thepin 22 is a rotary head 24 which as shown most clearly in Fig.,3, is composed of a 'sleeve portion 25 surrounding the pin 22 and a circular disk portion 26 .formed for a part of its diameter of about twice the thickness of the. outer portion. An annular plate 27 is attached to the thicker part ofthe portion 26 by means of bolts QS. There is thus formed between the outer part of portion 26 and the plate'QT', a channel to accommodate the chucks used for holding the carbon rods.

Each of the chucks, as shown most clearly in Figs. 2, 3 and 5, comprises a gear wheel 30 mounted upon a hub 31 which is mounted in bearings. in the members 26 and 27 of head 24. The hub is provided with an a porture through its center of a size-correspond-4 ing to the rods whichare to be held in the chuck and preferably the outer end of the hub is provided with a depression as at 32 to aid in guiding the rods into the aperture. Attached to the innerend of the hub isa box 33 containing a.number of sliding4 plungers 34, the outer ends of which are engaged by springs 35 attached to the outer surface of `the box by screws 36. The plungers 34 are of such length that when a rod -is inserted between 'their inner ends,

'V 25 the iods.

they'will be Aforced outwardly against ,the

action of the springs 35 whlch will' thus retain the rod firmly inv place Vwithin the and carries at the other enda pulley 42` driven by a belt 43 running overa pulley 44 mounted on a stub shaft projecting from the pedestal of the machine near its base.

15 -A large pulley 45 is associated with pulley 44 and by means of a belt 46 is connected toa pulley 47 at the end of ashaft 48 which (is mounted in bearings 49 at the top of the \\pedestal. Shaft 48 is provided with a driv- \i\ngpulley 50 through which power may be f supplied to the machine. Near the other eli' of shaft ,48 is a grinding wheel 51, the l I 4edgegof which is formed of proper bevel to if' fprotluce the desired amount of pointing of the grinding wheel is a pulley 52 which by means of a-belt 53 is connected to a pulley 5,4 loosely` mounted upon the end of the shaft 41 and retained inplace by a collar 55 attached to this shaft. A sprocket pinion 56 is fastened to pulley 54 and over this pinion passes a sprocket or silent chain 57 which as shown most clearly in Figs. 1 and 4, engages at diametrically opposite points of the'head 24, 4the gear wheels 30 associated with the chucks for holding the rods. Above the head 24, the chain 57 passes over an idler sprocket pinion 58 mounted on a 'bracket 59 which -is attached to the top of the enlarged head 23 of the pin' 22. A

. brake 60 is mounted upon the arm 18, and

is provided with a friction lining which engages the hub portion of the gear wheel 38.

The mechanism fory automatically feeding the rods into the chucks and removing them therefrom is mounted upon the enlarged head 23 of the pin 22. The rods are supplied from a hopper 61 mounted at one side of the machine and provided with a dis- '50 charge passage 62 which will permit only one rod at a time to be fed from the hopper. -As the rods pass out of the hopper, they-roll along a shelf 63 and finally drop into a semi- Y circular groove or trough 64 which registers wlth the aperture through the hub of each chuck as the chuck passesv opposite the end of the trough. 'F or forcing the rods out of this trough and-into the chucks,l a linger or pusher 65 is slidably mounted upon the shelf 60 63 and is connected by means of a link 66 to one end of a lever 67 which is placed within a slot in the head 23 and pivoted at 68. A spring 69 connected at one end to the lever and at the other end to a bracket 70 65 mounted upon the head 23, serves to retain 72 mounted on the end of a stud 73 which-glp yof these dogs `as there are chucks.

Fixed upon lthe shaft 48 beyond y A the end of the trough. If at this time, the

the linger normally at the outer end of the y trough 64. For vactuating lever'67, there is l provided a plunger 71 mounted in a.` slot at L the side of the head 23 and having a roller extends througha slot in a guiding plate 74 'attachedto the side of the head 23. The roller is adapted to be engaged by cam dogs 75 mounted upon the outer face of the rotatable chuck head 24, there being as many 7;

For the purpose of insuring that the'rods shall be held firmly against the beveled edge of the grinding wheel, a roller 76 is adjustably mounted upon the end of a rod 77 80 which is pivoted to the support at the point 78. The roller.76 is so mounted with respect to the rotatable head 24 that it engages the outer end of each rod as it is brought into grinding position. -A chute 79 is prog5 vided for conveying awaythe finished rods after they are removed from the chucks by the new rods that are being supplied to the machine.

In the operation of themachine described above, the shaft -48 is continuously driven at the desired speed by power pulley 50. The pulley 52 will be driven at the same speed and will through the belt 53 and pulley 54 drive the sprocket or silent chain'57 which 95 will rotate the. two' chucks which at this time occupy positions opposite the feeding slot 64 and adjacent the grinding wheel 51. All of the other chucks will not be driven until in turn they come into these positions. From the pulley 47 on the shaft 48, the shaft 41 will be driven at considerably reduced speed through. the belts 46 Iand 43 and pulleys .45, 44 and 42 with the result that head 24 which carries the chucks will be continuously rotatedl from shaft 41, but at a speed so slow that each chuck will be in l positionv adjacent the rapidly rotating grinding wheel for a sufficient length of time to effect the proper tapering of the rods. The rapidityV of the grinding action will also be increased due to the fact that each chuck as it comes into position adjacent the grindf l ing wheel will be given a rapid rotation by means of the chain 57. At the same time that thegrinding 'operation is being perforce it outwardly, thus moving the plunger 71v to swing one end of the lever 67 out- 120 wardlywhile the inward motion of the other end of this lever willby means of finger 65, push a rod out of the trough 64 into the chuck which at this time lies adjacent chuck contains arod which has been pointed, the new rod will force the pointed rod out into the discharge chute 79. The motion of the rotating head carrying the chucks will be slow enough to permit the operation of 4the rod toward the grinding Wheel.

namens that the rods may be brought' into proper. of the grindingl relation to the beveled edge Wheel. v

Theprovision of thebrake 60 helps to produce a smoothly running machine and prevents a vjerky motion oil the rotatable head at the time `when the rods pass out of Contact yWith the grinding Wheel.

. Whilean embodiment of the invention especially adapted for pointing carbon rods such as are used for the electrodes of dry batteries has vbeen shown, it Will be under stood that the machine is adapted to a Wide variety of uses in pointing rods of any ma terial. It will also be understood that various changes in the details of the construction of the machine may be made without departing from the principle of the linven:

tion.

l claim: y l

1.'In apparatus for pointing rods, the combination of a support, grinding means mounted upon the support, a plurality of rodholding means,jmeans mounted on the support for carrying the rod holding means, means for moving said carrying means to bring the rods into coaction with the grind ing means, and-means for feeding rods into the rod holding means.

2. In apparatus for pointing rods, the combination of a support, grinding means mountedon the support, a plurality of od holding means, means upon which said rod holding'means are mounted, means for moving said last named means to bring the rods into coaction with the grinding-means, and means for rotating each rod .holding means when the same comes into position adjacent the grinding means. e 3. In apparatus. for pointing rods, Vthe combination of a support', grinding means rotatably mounted upon the support, a plurality. of tubular members through which rods 'may be fed,'clamping means associated With said hollow members for holding rods in place therein, means upon which the hollow members are mounted and means for moving said last named means to bring the. rods successively into coaction lwith the grinding means.

t. ln j apparatus for pointing rods, the

combination of a pedestal, grinding means rotatably mounted on the pedestal, a plurality of rod holding meansrotatable sup.- portng meanstor the rod holding means,

means for rotating the supporting means to bring the rods into coaction with the grinding means and means mounted adjacent the supporting means for feeding the rods into the holding means. f

5. In apparatus for pointing rods, the combination of a pedestal, grinding means rotatably mounted on the pedestal, a plurality of rod holding means, rotatable supporting means for the rod holding means, means for rotating the supporting means to bring the rods into coaction with the grinding means, means mounted adjacent the supporting means for feeding the rods into the liolding'.means and means actuated by the supportingmeans for actuating said feeding means.

6. In apparatus for pointing rods, the combination of grinding means, a plurality of rod holding means, rotatable supporting means for the rod 4holding means, means for rotating the supporting means to bring the rods into coaction with the grinding means, means for rotating each rod holding means when it comes into position adjacent the grinding means and means for pressing the ends of the rods against the grinding means When they are in position to be ground.

7. .In apparatus for pointing rods, the combination of rotatable grinding means, a plurality of chucks for holding the rods, a circular rotatable member upon which said chucks are mounted, means for rotating said member to-bringl the chucks succes sively into position adjacent the grinding means and means for rotating each chuck whenit is in position adjacent the grinding means. Y

48. In apparatus for point-ing rods, the combination of grinding means, a-plurality of rod holding means, rotatable means upon which said rod holding means are supported, means for rotating said supporting means-to bring the rods successively into coaction with the grinding means and means for rotating each rod holding means when it comes into position adjacent the grinding means and for rotating each rod holding meanswhen it is in position to have a new rod supplied thereto.

ln apparatus for pointing rods, the combinationfof grinding means, a. plurality of rod holding means, means upon which said rod holding means are supported, means for moving said supporting means to bring the rods successively into coaction With the grinding means, a hoppeixmounted adjacent the supporting means, a trough in the hopper adapted to receive the Irods, means above the trough for feeding rods Jfrom the trough to the rod holding means and means for controlling the operation of the rod ieeding` means.

10. ln apparatus for pointing rods, the combination. et grinding means, a plurality of rod holding means, means upon which said rod holding means are supported, means for moving said supporting means to bring the rods into coaction with the grinding means, means for supplying new rods and ejecting vfinished rods from the rod holding means and means actuated by movement of the supporting means for actuating said supplying and ejecting means.

11. In apparatus for pointing rods, the combination of grinding means, a rotatable member mountedadjacent the grinding means,

a plurality of chucks mounted near the periphery of said member, each of said chucks comprising a hub rotatably mounted in said member, a plurality oi" spring pressed rod holding plungers at one end of the hub and a gear wheel fixed upon the hub, and means passing over the outer edge of said member adapted to engage and rotate the gear wheels which said rodholding means are mounted,

means for moving 'said supporting means to bring the rods into coaction with the grinding means and means for adjusting the relative position of said grinding means and supporting means to permit the rods to be brought into Contact With said grinding means.

r14. -In apparatus combination of a support, grinding means rotatably mounted at the top of the support, a' member pivotally mounted on a side of the support, a rotary member on said piv oted member, a plurality of rod holding means on the rotary member and means for adjusting the position of said pivoted memlfor pointing rods, theber to cause the rod holding'means to be brought into proper relation to the grinding means. f

15. In 'apparatus for pointing rods, the combination .of a support, grinding means rotatably mounted on the support, an arm pivoted on the support, means for adjusting the position of the arm, a pin on the free end of the arm, a rotary member mounted on the pin, a plurality of rod holding members on the rotary member, means mounted on the outer end of the pin for feeding rods into the rod holding members, and means on the rotary member for aetuating the rod feeding means.

16. In apparatus vfor pointing rods, the combination of a support, grinding means rotatably mounted on the support, a sleeve adjustably mounted on the support, an arm on the sleeve, a pin mounted on the end of the arm, a rotary member on the pin, a shaft mounted in the sleeve,` means for driving the rotary member from the shaft, a plurality ot rod holding means mounted on the rotary member, means. rotatably mounted onl the shaft for rotating the rod holdlng means -and means drlven from said grinding means for driving said rod holding rotating means.

In testimony whereof I atix my signature.

. ARTHUR M. BELL. 

